The 34947A module is a microwave switch for the Keysight 34980A basic device. It enables bidirectional switching of signals with a bandwidth from DC to 26.5 GHz. These switches are characterized by excellent specifications for insertion loss and for the voltage-standing wave ratio. The module contains three independent microwave switches, which are designed as 1x2 changeover switches. For general applications, these microwave switches are e.g. B. suitable to switch different signal sources to an input of a module to be tested (DUT / Device Under Test) such as receivers, transmitters or converters.